Rank's partner, in phrase

I believe the answer is:

file

(Other definitions for file that I've seen before include "Set of related records kept together" , "Tool for sawing through metal" , "Cutting tool or line of people" , "Folder; line" , "Smoothing tool - orderly batch of documents" .)

I've seen this clue in The Mirror.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.